Update CHANGELOG for forthcoming 1.3.0 release
Update CHANGELOG for forthcoming 1.3.0 release

testcontainers/testcontainers-java,barrycommins/testcontainers-java,testcontainers/testcontainers-java,barrycommins/testcontainers-java,rnorth/test-containers,rnorth/test-containers,outofcoffee/testcontainers-java,barrycommins/testcontainers-java,testcontainers/testcontainers-java,rnorth/test-containers,barrycommins/testcontainers-java,outofcoffee/testcontainers-java,outofcoffee/testcontainers-java